I-84 overnight closures as work begins to replace Cloverdale Road Overpass

BOISE – Construction is underway on improvements to the Cloverdale Overpass bridge and Cloverdale Road between Franklin Road and Camas Drive.

The Ada County Highway District and the Idaho Transportation Department transportation are joining together to replace and widen the damaged Cloverdale overpass bridge, and widen and improve the sections of road adjoining the bridge. Cloverdale Road will remain closed between Franklin Road and Camas Drive during construction, but one lane of travel in each direction will be open by June 15, 2019. Details of the improvements are listed below.

The public will experience immediate impacts of the construction as crews demolish the damaged bridge over Interstate 84. All eastbound lanes and two westbound lanes of I-84 will be closed overnight Monday (December 3) from 9 PM to 5 AM Tuesday morning. All westbound lanes and two east bound lanes of I-84 will be closed overnight Tuesday (December 4) from 10 PM to 6 AM Wednesday morning. Please refer to the map below for detour routes.

Idaho State Police will increase patrols to promote safe driving behavior in the work zone. The work zone may contain hidden hazards and the public is advised to stay out of the area. Pedestrian and bicycle traffic has been allowed to use the existing Cloverdale Overpass, but following demolition that route will be unavailable.

Throughout construction, access to local businesses and residences on Cloverdale Road will remain open. The work will include, but not be limited to: general construction noise, dust, equipment backup alarms and ground vibration. There may be some night work, but typical work hours on Cloverdale Road will be 7 AM to 8 PM.

This project will construct the following improvements:

Replace and widen the Cloverdale overpass bridge
Widen Cloverdale Road to two travel lanes in each direction with a center turn lane
A raised bike lane, curb, gutter and sidewalk on both sides of the roadway
Install an upgraded pedestrian signal at Emerson Drive and Cloverdale Road
Expand the bridge over the Ridenbaugh Canal

This joint project has been awarded to Concrete Placing Company, Inc. out of Boise for $10.3 million. Project information and the opportunity to sign up for email updates can be found online at: http://www.achdidaho.org/Projects/proj_road_cloverdale-road-franklin-road-to-camas-drive.aspx.

Overnight ramp closures scheduled at Franklin, Northside interchanges in Nampa next week

The westbound on-ramps at the Franklin and Northside interchanges will be closed on several occasions next week while the Idaho Transportation Department rebuilds the interstate shoulders near the ramp.

The westbound I-84 on-ramp at Franklin Boulevard will be closed from 10 p.m. to 6 a.m. on Monday, Nov. 5 and Tuesday, Nov. 6. Motorists can use the ramps at the Garrity and Northside interchanges during the overnight closures.

The westbound on-ramp closure at Northside Boulevard will occur from 8 p.m. to 6 a.m. on Thursday, Nov. 8. Motorists will be directed to use the ramps at the Franklin and Karcher interchanges during the overnight closure.

ITD is widening the I-84 shoulders between the Karcher Road and Franklin Boulevard interchanges this fall in preparation for major construction next spring. Download the project fact sheet for details.

“By moving swiftly to prepare the shoulders this fall, we will be positioned to start the expansion work next year,” said ITD Program Manager Amy Schroeder. “This is the first step of the $330 million investment in I-84 in Canyon County over the next several years. The expansion is a statewide priority to improve safety, mobility and economic opportunity.”

To request email updates about construction activities, text 84CORRIDOR to 22828. For more information on the I-84 expansion project, visit itdprojects.org/i-84-karcher-to-franklin.

Interstate 84 expansion project in Nampa begins Sept. 26

The outside shoulders of I-84 will receive temporary widening to accommodate traffic during future construction.

The Idaho Transportation Department will begin reconstructing and widening the shoulders of I-84 between the Karcher and Franklin Boulevard interchanges on Wednesday, Sept. 26. This is the first step of widening I-84 through Nampa.

All traffic lanes will remain open between 5 a.m. and 10 p.m. as crews will work primarily at night. Speeds will be reduced to 55 mph during the day and night. Traffic will be down to one lane in each direction during construction times. The work will continue until mid-November.

The newly reconstructed shoulders will be used to keep two lanes of traffic flowing in each direction when I-84 is widened to three lanes between Karcher Road and Franklin Boulevard starting next spring.

In 2019 and 2020, ITD will replace the Karcher Overpass, redesign and reconstruct the Northside Interchange, and rebuild the bridges over the railroad and Mason Creek. Improvements are expected to improve safety, capacity and traffic flow in Canyon County for many years.

A separate environmental study is underway to identify needed improvements between the city of Caldwell and the Karcher Interchange.

For more information on the I-84 expansion project, please visit itdprojects.org/i-84-karcher-to-franklin or text 84CORRIDOR to 22828.

Single lane closure on eastbound I-84 Sunday July 1

The Idaho Transportation Department will close the left-most lane of eastbound Interstate 84 beneath the Cloverdale Overpass Sunday, July 1. This will allow crews to perform work in preparation for replacing the damaged bridge.

Crews will drill beneath the existing bridge to test the soil composition. This will inform what treatment is needed for the foundation of the replacement bridge for Cloverdale Road. The replacement, currently being designed by ITD engineers will feature four 11-foot travel lanes, 5.5-foot raised bike lanes, and 7.5-foot sidewalks.

The single-lane closure is expected to begin early Sunday morning and stay in place for most of the day.

Drivers are encouraged to use caution in the work zone. For updated information on traffic impacts on the State Highway System, please visit 511 online at 511.idaho.gov.

ITD begins work to replace Cloverdale bridge over I-84 with support of ACHD Commissioners

The Ada County Highway District Board of Commissioners voted unanimously to support ITD’s plan to replace the Cloverdale Road bridge over Interstate 84.

The concurrence provides a unified front for ACHD and ITD on how best to address this emergency. The Idaho Transportation Board passed a resolution last week to replace the Cloverdale bridge with a $6-8 million structure.

ITD and ACHD developed a preliminary design for the replacement bridge that will match the county highway district’s long-range plans for Cloverdale Road. ITD District 3 Engineer Amy Revis presented this plan to the ACHD Board on Wednesday. It includes four 11-foot travel lanes, a 5.5-foot raised bike lane, and a 7.5-foot sidewalk.

“I am grateful for the full support of the ACHD Board of Commissioners,” said Revis. “The collaboration between our agencies will help create a bridge that will serve this area well for many years to come. I ask the public to exercise patience as we construct these needed improvements.”

ITD engineers have already been gathering information needed for designing the replacement bridge. When a design is complete, the department will seek bids from contractors to construct the bridge.

The old bridge will remain closed until the new bridge is complete, which is expected to take 12 months. ITD closed the Cloverdale bridge due to extensive damage caused by a fatal crash Saturday, June 16.

The replacement will not include on- or off-ramps to I-84. ITD’s goal is to reopen the important crossing point at Cloverdale quickly. The study and analysis of adding ramps and alternative actions in the area would greatly delay that goal.

ITD releases traffic control plan used for Interstate 84 construction

The Idaho Transportation Department has received interest regarding the traffic control plan for the Five Mile to Orchard project on Interstate 84. You can see the entire traffic control plan for project by clicking here.

ITD Construction projects that have shoulder or lane restrictions are required to include a traffic control plan that meet the standards included in the federal and state approved Manual on Uniform Traffic Control Devices (MUTCD). These contractor traffic control plans are used to set up signs, barrels, and other traffic control devices for a project.

Below is a brief description of the traffic control plan:

First, the plans for advance warning signs before the lane reduction. This information can be found on page 14 of the traffic control plan.

*A section of the traffic control plan for warning signs before the lane closure and construction*

The first sign a motorist would encounter is a portable changeable message sign on the right shoulder. This sign read “NIGHT WORK THRU JUNE: CHECK 511.” This sign was placed on the east side of the Eagle Road Overpass.

A minimum of 1,500 feet after the portable changeable message sign, the plan calls for a 4’x4’ orange diamond signs on both shoulders that read “ROAD WORK AHEAD.”

A minimum of 1,000 feet after the “ROAD WORK AHEAD” sign the plan calls for a 6’x3’ white rectangular signs on both shoulders that read “INCREASED FINES FOR WORK ZONE SPEED VIOLATIONS.” Following these signs, a minimum of 1000’ away 4’x4’ orange diamond signs on each shoulder are placed with a “SPEED LIMIT 55” box and arrow pointing up indicating a speed limit reduction ahead.

A minimum of 1,000’ feet beyond these orange diamond sign, the plan calls for 4’x5’ white and black rectangular signs on both shoulders reading “SPEED LIMIT 55.” At this point, drivers have seen four signs on each shoulder over a minimum of 4,500 feet. All of this signage is placed before the lane restriction begins.

The next section ITD highlights is the beginning of the construction zone. This information can be found on page 12 of the traffic control plan.

*A section of the traffic control plan showing the placement for signs and barrels before, through, and after the construction zone*

A minimum of 1,000 feet after the “SPEED LIMIT 55” signs discussed above, the plan calls for 4’x4’ orange diamond signs on both shoulders indicating the number of lanes closed ahead. This project closed the three left lanes and the signs at this location on the field read “3 LANES CLOSED AHEAD.”

A minimum of 1,500 feet after these signs, the plan calls for 4’x4’ orange diamond signs on both shoulders indicating the left lane is closing ahead (sign 8 in the figure above). A minimum of 1,000’ after this sign, the taper to close off the lane begins.

The plan allows for two options on how to execute a taper. One option is to have a continuous taper closing all three lanes over 1,980 feet. The second is to have three separate tapers, with a tangent (straight) section between each taper.

The plan for this option is detailed as follows. At the beginning of each taper, an illuminated merge right arrow sign is placed. Orange drums with retroreflective lines are used for each taper and tangent section, spaced no more than 55 feet apart.

Each taper must extend a minimum of 660 feet. At the end of each taper, a minimum straight segment (identified as tangent on the plan sheets) of 1,320 feet (1/4 mile) extends until the beginning of the next taper.

Overall, from the first notice of construction at the portable changeable message sign to the final single lane of travel, a vehicle traveling the maximum legal speed would have more than two minutes and twenty seconds to make the appropriate maneuvers and be in the proper lane.

Cloverdale Road Overpass to remain closed for safety of the traveling public

Cloverdale Rd Overpass is closed for repairs following a fiery crash

The Cloverdale Overpass Bridge will remain closed indefinitely following a fiery crash on Interstate 84 late Saturday evening.

The fire significantly damaged a section of the overpass. ITD inspectors have evaluated the damage and determined the bridge is not safe to travel on. The bridge will remain closed until full repairs can be made. ITD has assessed it is safe for traffic travelling underneath the bridge on I-84.

ITD will develop an emergency contract to make repairs as quickly as possible. At this time, the department plans to remove and replace the damaged section. This is expected to take several months to complete. Details on the schedule, cost, and traffic impact of repairs will be shared as they are developed.

Test pile driving rescheduled for July 9-12 on I-84 at Northside Blvd.

Crews drive pylons into the ground for testing

Shoulder restrictions will be in place on Interstate 84 in Nampa at the Northside Boulevard interchange July 9-12. Crews will be driving test piles in the center median as part of early prep work for ITD’s Northside Interchange Replacement Project.

Pile driving will be done during the day; this work is noisy. No lane closures are anticipated, but drivers are urged to slow down and pay attention in the work zone. Crews will set up traffic control and a work zone the night of July 9 and are anticipated to be complete by the end of the week. Learn more at itd.idaho.gov/84corridor.

This work was originally scheduled to take place June 18-20. It was delayed due to wet ground conditions.

Give ITD feedback on Mountain Home plans

The Idaho Transportation Department is seeking public comment on several long-range plans in Mountain Home.

The Department and the City of Mountain Home have worked together to create concepts for the interchanges at Exits 90 (Old US-30) and 95 (American Legion) as well as access control along American Legion Blvd (Idaho Highway 51 and US-20). You can see project details and leave a comment by visiting the project website.

The redesign on Exit 90 is designed to improve the safety and efficiency of the interchange. It also accommodates a future connection to NW Mashburn Road.

At Exit 95, ITD is asking for public comment on three alternative designs. Each design has its own advantages and trade-offs. Your input will be valuable in helping to determine the best choice.

The access study is a collaborative effort between ITD and Mountain Home to provide long-range guidance on safer configurations for American Legion Blvd. The design promotes safety while ensuring the public can access businesses along the corridor. Once finalized, this plan will provide up-front information for businesses seeking to develop in the area, enhancing the local economy.

The comment period for this study will end May 15, 2018.

Interstate 84 lane closures between Karcher and Franklin will begin Dec. 4

Interstate 84 looking west from Franklin Blvd. Interchange

BOISE – The Idaho Transportation Department (ITD) has scheduled overnight lane restrictions on Interstate 84 in Nampa next week (Dec. 4-8) to complete geotechnical tests for upcoming improvements to the Interstate. This geotechnical work is one of the first steps of designing substantial improvements to I-84 between the Karcher Interchange and Franklin Boulevard Interchange.

Weather permitting, one lane of east- and westbound I-84 will be closed between 10 p.m. and 5 a.m. from Dec. 4 to Dec. 8.

ITD is planning to widen the interstate, redesign the Northside Interchange and replace the Karcher Overpass and bridges over the railroad and Mason Creek. Improvements are expected to improve safety, capacity and traffic flow in Canyon County for many years. Construction could begin as early as the fall of 2018.

For more information about the I-84, Franklin to Karcher project, visit the project webpage.